﻿using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Text.RegularExpressions;

namespace Helper
{   /// <summary>
    /// copyright:kklldog
    /// date:2011-08-29
    ///  qq:17014842
    /// </summary>
    public class ColorHelper
    {
        /// <summary>
        /// 从ARGB转换
        /// </summary>
        /// <param name="color"></param>
        /// <returns></returns>
        public static SolidColorBrush FromArgb(string color)
        {
            int[] a = new int[4];
            int[] b = new int[8];
            string rg1 = "#[a-fA-F0-9]{8}";
            Regex r1 = new Regex(rg1);
            if (r1.IsMatch(color))
            {
                for (int i = 0; i < 8; i++)
                {
                    switch (color.Substring(i + 1, 1))
                    {
                        case "a":
                        case "A": b[i] = 10; break;
                        case "b":
                        case "B": b[i] = 11; break;
                        case "c":
                        case "C": b[i] = 12; break;
                        case "d":
                        case "D": b[i] = 13; break;
                        case "e":
                        case "E": b[i] = 14; break;
                        case "f":
                        case "F": b[i] = 15; break;
                        default: b[i] = int.Parse(color.Substring(i + 1, 1)); break;
                    }
                }
            }
            else
            {
                string rg2 = @"^[A-Fa-f0-9]{8}";
                Regex r2 = new Regex(rg2);
                if (r2.IsMatch(color))
                {
                    for (int i = 0; i < 8; i++)
                    {
                        switch (color.Substring(i, 1))
                        {
                            case "a":
                            case "A": b[i] = 10; break;
                            case "b":
                            case "B": b[i] = 11; break;
                            case "c":
                            case "C": b[i] = 12; break;
                            case "d":
                            case "D": b[i] = 13; break;
                            case "e":
                            case "E": b[i] = 14; break;
                            case "f":
                            case "F": b[i] = 15; break;
                            default: b[i] = int.Parse(color.Substring(i, 1)); break;
                        }
                    }
                }
            }
            a[0] = b[0] * 16 + b[1];
            a[1] = b[2] * 16 + b[3];
            a[2] = b[4] * 16 + b[5];
            a[3] = b[6] * 16 + b[7];
            return (new SolidColorBrush(Color.FromArgb((byte)a[0], (byte)a[1], (byte)a[2], (byte)a[3])));
        }
        /// <summary>
        /// 从Color转换
        /// </summary>
        /// <param name="color"></param>
        /// <returns></returns>
        public static SolidColorBrush FromColor(Color color)
        {
            return new SolidColorBrush(color);
        }
    }
}
